27495086161 has 2 divisors, whose sum is σ = 27495086162. Its totient is φ = 27495086160.

The previous prime is 27495086149. The next prime is 27495086231. The reversal of 27495086161 is 16168059472.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26252100625 + 1242985536 = 162025^2 + 35256^2 .

It is a cyclic number.

It is not a de Polignac number, because 27495086161 - 2²⁵ = 27461531729 is a prime.

It is not a weakly prime, because it can be changed into another prime (27495080161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13747543080 + 13747543081.

It is an arithmetic number, because the mean of its divisors is an integer number (13747543081).

Almost surely, 2^27495086161 is an apocalyptic number.

It is an amenable number.

27495086161 is a deficient number, since it is larger than the sum of its proper divisors (1).

27495086161 is an equidigital number, since it uses as much as digits as its factorization.

27495086161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 27495086161 in words is "twenty-seven billion, four hundred ninety-five million, eighty-six thousand, one hundred sixty-one".